Round stone



FIG. 1 is a top and side perspective view of a round stone;

FIG. 2 is a bottom and side perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a side view thereof, all sides having the same side view.

The broken lines in FIGS. 1, 2, 4, and 5 depict portions of the round stone that form no part of the claimed design. 

CLAIM We claim the ornamental design for a round stone, as shown and described. 